Street-cleaning machine.



M. L. OSBORNE.

STREET CLEANING MACHINE.

APPLICATION FILED OCT. 28| 1916.

Patented June 5, 1917.

IVI. I.. OSBORNE.

STREET CLEANING MACHINE.

APPLICATION FILED 00.26. |916.

Patented J une 5 4 SHEETS-SHEET 3.

M. L. OSBORNE.

STREET CLEANING MACHINE.

APPLICATION FILED oc. 2a. IQIe.

Patented J une 5 me mmm: Pneus colmnamuruo., wAsmmzwN. o. c4

MARSHALL L. OSBORNE, OIF WAU'KOMIS, OKLAHOMA.

STREET-CLEANING :MACHINE Application filed October 28, 1916.

To all v1x2/tom z'z may concern:

Be it known that l, MansHALL L. OsBonNn a citizen of the `United States, residing at 1V aukomis, in the county ot Garfield and State ot Oklahoma7 have invented new and usetnl Inmrovements in Street-Cleaning lt/iachines, of which the following is a speciiication.

This invention relates to street cleaning machines of that class or type which are equipped with a rotary brush.

ne object ot' the invention is to produce a machinel of the class described which is equipped with a movably and adjustably supported casing of simple and improved construction wherein the rotary brush is mounted.

A further object ot. the invention is to produce simple and improved adjusting means for the brush carrying casing.

A Yturther object ot th-e .invention is to produce an improved construction and assemblage of parts whereby when the brush carrying casing is elevated from the ground the means for operating the brush will be automatically thrown out of gear.

A further object of the invention is to simplify and improve the construction of the rotary brush.

A further object ot' the invention is to simplify and improve the construction and arrangement of the dust vpan or tray that cooperates with the brush and to combine with the same a carrying roller extending the entire width of the machine and operating to support the tray or pan and also to crush or flatten obstructions such as paper, leaves and the like which might otherwise accumulate in front ot the machine.

A further object of the invention is to simplify and improve the construction and arrangement of the dirt receptacle, to provide doors for said receptacle that are mounted on the carrying frame, to permit the receptacle to be tilted for the purpose of discharging its contents without atfecting the position ot' the doors, and to provide tilting means for the receptacle.

A. further object of the invention is to provide the dust receptacle with a cover through which air may be ltered and with a detlector to Iprevent dirt from being drawn directly upon such cover.

TvVith these and other ends in view which will readily appear as the nature of the invention is better understood, the same con- Specication of Letters Patent.

varrangement and combination of rview taken on the line Patented June 5, 1911"?. serial No. 128,256.

sists in the improved construction and novel which will be hereinafter iully described and particularly pointed out in the claims.

.ln the accompanying drawings has been illustrated a simple and preferred form of the invention, it being, however, understood that no limitation is necessarily made to the precise structural details therein eX- hibited, but that changes7 alterations and modifications within the scope of the claims may be resorted to when desired.

In the drawings,-

Figure 1 is a top plan view ot a machine constructed in accordance with the invention, parts having been broken away to eX- pose the interior.

Fig. 2 is a side elevation.

Fig. 3 is a longitudinal vertical sectional 3`3 in Fig. 1.

Fig. el, is a transverse sectional view taken through the brush casing on the line 4% in Fig. 1, and showing the brush in elevation.

Fig. 5 is a perspective detail view of the front portion of one side oi the machine.

Fig. 6 is a view in front elevation of the dust pan and the roller supporting the same.

Fig. 7 is a detail view in side elevation of a portion of the brush casing and related parts.

Corresponding parts in the several figures are denoted by like characters of reference.

The frame of the improved machine is supported near its rearward end on an axle 16 having ground wheels 17. The forward portion of the frame is supported on a truck 1S having steering' wheels 19 and a tongue 20, the specific construction and arrangement of these parts being not herein claimed.

The frame of the machine includes side members 21 each having an upwardly eX- tending bracket 22 affording a bearing for a shaft 23. Each shaft 9,3 carries a spur wheel 24 and a sprocket wheel 25, the spur wheel being loosely mounted on the shaft, and the sprocket wheel being mounted on the shaft for rotation therewith. Each ground wheel 17 has a sprocket wheel 26 from which a chain 27 is guided over the sprocket wheel 25 at that side of the machine. The spur wheel 24: and the sprocket wheel 25 are provided with interengaging clutch members 28, 29, and the sprocket parts wheel 25 is pressed like a spring 30, whereby the clutch members will be normally main tained in engagement with each other. The sprocket wheel 25 may be moved against the tension of the spring 30 by a shipping fever 31,.

Fulcrumed on each shaft 23 is a lever 32 which extends forwardly between guide members 33 rising from the side members of the frame. The levers 32 provide bearings for a shaft 34 on'which the cylindrical brush B is mounted, said shaft being also provided with pinions 35 meshing with the spur wheels 24, thereby causing the brush to be driven by power transmitted from the ground wheels 17. The clutch members included in the transmission means are of the ratchet type; therefore, when the machine in turning about pivot-s on either one ofthe ground wheels, the interengaging clutch members at that side of the machine will slip idly past one another, thereby facilitating the turning` of the machine. rlhe levers 32 are equipped with stop members 36 engaging quadrants 37, whereby the said levers and related parts may be retained at various adjustments. Each of the shipping levers 3l is connected with the frame of the machine by a flexible element, such as a cord 33 lying' in the path of ene of the levers 32, whereby when said levers are raised for the purpose of elevating the brush from the ground the shipping levers will be actuated by contact of the levers 32 with the said flexible elements 3S so as to throw the interengaging clutch members 28, 29 out of gear, thereby interrupting the transmission of motion and placing the parts in neutral position for convenience in transportation.

rlhe cylindrical brush B includes in its construction the heads 39 and rows of bristles 40 and wire tufts 41, the latter being preferably of a length exceeding the length of the bristles to insure sufhcient resiliency. Scrapers 42 of rubber, leather or other sufliciently flexible material may be arranged at intervals between the rows of bristles and wire tufts for the purpose of interiorly'engaging the brush casing, as will be presently described, to produce a degree of suction whereby the operation of the machine is greatly improved.

The main brush casing is formed by a shield 43 of arcuate cross section, the same being provided at the ends thereof with flanges 44 overlapping the heads 39 of the brush and contacting therewith, the opposed faces of the brush heads 39 and the flanges 44 being perfectly smooth so that dust proof joints will be produced without undue friction. The shield is provided with'brackets 45 that pivotally engage the brushV carrying shaft 34, thus permitting the said shield to be raised and lowered with the brush when the latter is adjusted by means of the levers 32. A portion of the shield 43 is concentric with the brush carrying shaft and is adapted to be directly engaged by the brush when the latter is rotated. lt will be seen that bythe transmission means herein described, the brush will be rotated reversely to the movement of the machine when passing over the ground; that is to say, the lower part of the brush will move forward and upward when the machine is in motion in direct engagement with the inner face .of theshield, thereby producing suction in an upward direction within that portion of the brush casing which is formed by the said shield. rlhe upper portion of the shield'is of greater radius than the lower portion which, as described, is concentric with the brush carrying shaft, and said upper portion of the shield is connected with the levers 32 by connecting rods or links 46 by the act-ien of which when the forward ends of the levers are depressed to move the brush and related parts in a downward direction, the top portion of the shield will be moved through an arc of smaller radius than the are wherein the lower portion of the shield is moved, causing the said shield t-o be slightly tilted and the upper portion thereof to be moved closer to the perimeter of the brush. This places the shield in a slightly eccentric position withrespeot to the brush which is found highly effective in causing the dirt t-o be carried over the brush and to be disposed of, as will be hereafter described.

A second shield 47 of arcuate cross section constitutes what may be termed an auxiliary brush casing, the same being provided with end flanges 48, and arranged to provide a cover for the rearward portion of the brush. This auxiliary brushV casing is connected with the levers 32 by means of rods 49. A shield or flap 50 which is hinged on the forward portion of the frame of the machine overlaps the shield 43, and wings or cheek pieces 51, which are fixed on the frame of the machine, overlap the end flanges 44 and 48 of the shields 43 and 47, respectively, said flap and wings serving to produce joints as nearly dust proof and air tight as is necessary for the successful operation of the machine.

rlhe shield V43 carries at the lower edge thereof a dust pan 52, the edge of which, when the shield is lowered, is intended to contact with the surface of the street that is to be swept. The dust pan is supported in part by the brackets 45 which Valso support a roller 53 that extendsA the entire width of the machine. rlhis roller not only serves to sustain the forward portion of the dust pan in a. slightly raised position with respect to the surface of the street, but it also serves as a crushing device for crushing down and flattening obstructions, such as leaves and scraps of paper which when loe thus crushed will readily pass beneath the dust pan and be picked up by the brush, while in the absence of such crushing means they will be apt to accumulate in front of the machine and interfere with the operation thereof.

The frame structure of the machine includes uprights 54 that are suitably connected together by cap pieces 55 and diagonal braces 56, so as to form a cratedike structure wherein the dust receptacle or bin 57 is accommodatec. The frame structure also includes a bottom platform. 58 at the rearward edge o-f which the bin or receptacle 57 is mounted on a hinge 59 about the axis of which the bin may be tilted to discharge the contents thereof through an opening G0 in the rear wall thereof. The opening 60 may be obstructed when the machine is in operation by doors 6l which are hinged on the rearward uprights 54 and which overlap at the middle portion of the box so as to be capable of being secured in closed position when the dust box is in receiving position by means of a turn button 62 pivoted on the rear wall of the bin. For the purpose of tilting' the bin to a discharging position, a. drum shaft 63 is provided, the same being journaled on the forward part of the frame. The drum shaft is connected with the cap pieces 55 at the sides of the frame by means of iexible elements, such as cables 64;, each of which has one end connected with the drum shaft and the other end with one of the cap pieces 55, each flexible element being guided beneath a pulley 65 on the side of the dust bin near the lower front corner thereof and over a pulley 66 mounted near the upper end of one of the uprights 5e, it being, of course, understood that the nature and location of the guide means may be changed. By the arrangement as shown, however, it will be readily seen that by rotating the drum shaft to wind the flexible elements thereon the dust bin may be tilted so as to permit the contents to escape, it being understood that the doors have been previously released from the turn button 2Q so as to permit them to swing open without interfering with the tilting of the receptacle` The dust bin or receptacle 57 is provided with a detachable cover consisting of a frame/67 having textile or other suitable material 68 secured thereto to provide for the escape of air which will be filtered through said textile covering, while the dust is retained within the receptacle. The top wall of the receptacle has an opening 69 sufficiently large to admit the dirt which is thrown into the receptacle beneath the shield or flap 50, a horizontal shelf or de flector 70 being provided within the receptacle 57 to prevent the dirt from being thrown forcibly against the textile filtering cover, thereby avoiding the danger of injuring said cover.

From the foregoing description, taken lin connection with the drawings hereto annexed, the operation and advantages of this invention will be readily understood. The improved street sweeping machine is simple in construction, inexpensive and thor oughly efficient in operation. The machine may be made in various sizes and in various proportions, according to the work for which it is intended, and it may be drawn by animal power or a motor of any well known type. It is obvious that when a motor is -mployed it may be installed in any convenient position on the frame of the machine, and that when a motor is used well known transmission means of any description may be employed for driving the machine and the moving parts thereof.

Having thus described the what is claimed as new, is z` l. In a street sweeping machine, a wheeled frame, upstanding brackets at the sides thereof, shafts carried by said brackets7 levers ,pivoted on the shafts, a cylindrical brush having a shaft journaled on the levers, means for securing the levers and the brush carried thereby at various adjustments, means including a transmission chain and interengagingY clutch members for driving each of the shafts supported by the upstanding brackets, and intermeshing spur wheels on said shafts and the brush carrying shaft, the interengaging clutch members including each a slidable spring pressed member; in combination with shipping levers for said slidable spring pressed'members and exible elements connecting the shipping levers with the frame, said iexible elements lying each in the path of the brush supporting levers.

2. In a street sweeping machine, a wheeled frame having upstanding brackets, levers fulcrumed on said brackets, a cylindrical brush having a shaft journaled on the levers, and a partial casing consisting of a shield suitably supported and operable by the levers, links being provided to connect the levers with the shield.

3. In a street sweeping machine, a wheeled frame, upstanding' brackets at the sides thereof, shafts supported by said brackets, levers fulcrumed on the shafts, a cylindrical brush having terminal heads and an axial shaft, said shaft journaled on the levers, a partial casing consisting of a shield having terminal iianges overhanging and contacting with the heads o-f the brush, brackets on said shield pivotally engaging the shafts carried by the upstanding brackets, and links connecting said shield with the levers.

4. In a machine of the class described, a

invention,

propelled by means of wheeled frame having upstanding brackets atV the sides thereof, shafts carried by said brackets, levers fulcrumed on the shafts, a partial casing consisting of a shield ofY arcuate cross section having brackets pivotally engaging the shafts, links connecting the shield with the levers, a cylindrical brush having heads and provided with a shaft journaled on the levers, flanges on the shield overhanging and contacting with the heads of the brush, a shield hinged on the casing and overlapping the first mentioned shield, and wings fixed on the casing and overlapping the flanges of the first mentioned shield.

5. ln a machine of the class described, a wheeled frame having upstanding brackets at the sides thereof, shafts carried by the brackets, levers fulcrumed on the shafts, a shaft journaled on the levers and carrying a cylindrical brush having heads at the ends thereof, a partial casing consisting of a shield having brackets pivoted on the shafts carried by `the upstanding brackets, links connecting the shield with the levers, and a dust pan carried by the shield and by the brackets supporting the same.

6. In a machine of the class described, a wheeled frame having upstanding brackets at the sides thereof, shafts carried by the brackets, levers fulcrumed on the shafts,

a shaft journaled on the levers and carry-v ing a cylindrical brush having heads at the ends thereof, a partial casing consisting of a shield having brackets pivoted on the shaft carried by the upstanding brackets, links connecting the shield with the levers,

Vand extending the and a dust pan carried by the shield and by' the brackets supporting the same, in combination with a supporting and crushing roller mounted adjacent to the dust pan chine.

7. ln a machine of the class described, a Wheeled frame having upstanding brackets at the sides thereof, shafts carried by said brackets, levers fulcrumed on the shafts, a shaft journaled on the levers and carrying a cylindrical brush having heads at the ends thereof, a casing member for the forward portion of the brush consisting of a shield having brackets pivotally engaging vthe shafts mounted on the upstanding brackets, and a casing for the rearward portion of the brush connected with and carried by the levers.

8. ln a machine of the class described, a wheeled frame having upstanding brackets at the sides thereof, shafts carried by said brackets, levers fulcrumed on the shafts, a shaft journaled onthe levers and carrying a cylindrical brush having heads at the ends thereof, a casing member for the forward portion of the brush consisting of a shield having brackets pivotally engaging the shafts mounted on the upstanding brackets, and a casing for the rearward portion of the brush connected with and carried by the levers, the shield constitutingthe forward casing member carrying a dust pan, and rotary supporting means for the same.

full width of the ma- In testimony whereof I afiiX my signature. A

MARSHALL L. OSBORNE.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. C. 

